ZyXEL Communications MSC1024G Series User Manual page 650

Chapter 27 ima Commands
where
linklist
This command sets link members for the specified IMA group.
Syntax:
ima group sym <slot-gid> symop|asymo|asymcfg
where
symop
asymop
This command sets two parameters: Symmetrical Configuration and Symmetrical/
Asymmetrical Operation
• Symmetrical Configuration: Each E1 physical line has an upstream and a downstream
IMA links. Select this to have an IMA link in this group be allowed to transmit and receive
data only when both the downstream and upstream links are active and connected between
the IMA devices.
• Symmetrical Operation: Both this IMA line and the remote ADM device should wait for
the other end's "active confirmation" before transmitting or receiving data.
• Asymmetrical Operation: Both this IMA line and the remote ADM device do NOT need to
wait for the other end's "active confirmation" before transmitting or receiving data.
Syntax:
ima group maxdifdelay <slot-gid> <maxdifdelay>
where
maxdifdelay
This command sets the maximum number of milliseconds the IMA group can wait to receive
delayed data.
Syntax:
ima group minlink <slot-gid> <minlink>
650
= The number of one or multiple link(s) that you want to add into this IMA
group. For examples, 1,3 means links 1 and 3. 1~3 means links 1, 2 and
3.
Symmetrical Configuration + Symmetrical Operation
=
= Symmetrical Configuration + Asymmetrical Operation
= This is the maximum number of milliseconds (25~300) the IMA group can
wait to receive delayed data. If a delay exceeds this setting, the IMA
triggers a Loss of Delay Synchronization alarm and changes the state of
the link to indicate a line defect.
MSC1000G/1024G/1224G Series User's Guide